amqp-node
AMQP 0-9-1 library and client for Node.JS
npm install amqplibA library for making AMQP 0-9-1 clients for Node.JS, and an AMQP 0-9-1 client for Node.JS v10+.
This library does not implement AMQP 1.0 or AMQP 0-10.
Project status:
- Expected to work
- Complete high-level and low-level APIs (i.e., all bits of the protocol)
- Stable APIs
- A fair few tests
- Measured test coverage
- Ports of the RabbitMQ tutorials as examples
- Used in production
Still working on:
- Getting to 100% (or very close to 100%) test coverage
Callback API example
const amqplib = require('amqplib/callback_api');
const queue = 'tasks';
amqplib.connect('amqp://localhost', (err, conn) => {
if (err) throw err;
// Listener
conn.createChannel((err, ch2) => {
if (err) throw err;
ch2.assertQueue(queue);
ch2.consume(queue, (msg) => {
if (msg !== null) {
console.log(msg.content.toString());
ch2.ack(msg);
} else {
console.log('Consumer cancelled by server');
}
});
});
// Sender
conn.createChannel((err, ch1) => {
if (err) throw err;
ch1.assertQueue(queue);
setInterval(() => {
ch1.sendToQueue(queue, Buffer.from('something to do'));
}, 1000);
});
});Promise/Async API example
const amqplib = require('amqplib');
(async () => {
const queue = 'tasks';
const conn = await amqplib.connect('amqp://localhost');
const ch1 = await conn.createChannel();
await ch1.assertQueue(queue);
// Listener
ch1.consume(queue, (msg) => {
if (msg !== null) {
console.log('Received:', msg.content.toString());
ch1.ack(msg);
} else {
console.log('Consumer cancelled by server');
}
});
// Sender
const ch2 = await conn.createChannel();
setInterval(() => {
ch2.sendToQueue(queue, Buffer.from('something to do'));
}, 1000);
})();
Running tests
npm testTo run the tests RabbitMQ is required. Either install it with your package manager, or use docker to run a RabbitMQ instance.
docker run -d --name amqp.test -p 5672:5672 rabbitmqIf prefer not to run RabbitMQ locally it is also possible to use a
instance of RabbitMQ hosted elsewhere. Use the URL environment
variable to configure a different amqp host to connect to. You may
also need to do this if docker is not on localhost; e.g., if it's
running in docker-machine.
One public host is dev.rabbitmq.com:
URL=amqp://dev.rabbitmq.com npm testNB You may experience test failures due to timeouts if using the dev.rabbitmq.com instance.
You can run it under different versions of Node.JS using nave:
nave use 10 npm testor run the tests on all supported versions of Node.JS in one go:
make test-all-nodejs(which also needs nave installed, of course).
Lastly, setting the environment variable LOG_ERRORS will cause the
tests to output error messages encountered, to the console; this is
really only useful for checking the kind and formatting of the errors.
LOG_ERRORS=true npm testTest coverage
make coverage
open file://`pwd`/coverage/lcov-report/index.html